People can go out and buy McLarens or Lamborghinis without any special training - I'm not sure I really see the difference to be honest.
I've had some very powerful cars over the years (some without any computerised driver aids), I'm still alive. I don't think any of the dealers gave me any special warnings either.
I think you will find that new McLarens, Lambo's etc etc all have a very comprehensive suit of 'driver aids' that can be 'selected' downwards as required... "Race'! >:)
I don't think any of the dealers gave me any special warnings either.